Jesse Spencer Matthew Casey Actor Taylor Kinney Kelly Severide Actor Monica Raymund Gabriela Dawson Actor Eamonn Walker Chief Wallace Boden Actor David Eigenberg Christopher Herrmann Actor Joe Minoso Joe Cruz Actor Yuri Sardarov Brian "Otis" Zvonecek Actor Christian Stolte Randy "Mouch" McHolland Actor Kara Killmer Sylvie Brett Actor Miranda Rae Mayo Stella Kidd Actor Jonathan Frank Gerard Guest Star Randy Flagler Capp Guest Star Anthony Ferraris Tony Guest Star Daniel di Tomasso Zach Guest Star Ariane Rinehart Lily Guest Star Noah Segan Nate Isaacs Guest Star Michael Hayden Chief Huffhines Guest Star Phil Ridarelli Mitchell Monroe Guest Star Derek Haas Executive Producer Michael Brandt Executive Producer Jeffrey Nachmanoff Executive Producer Dick Wolf Executive Producer Peter Jankowski Executive Producer Danielle Gelber Executive Producer